Problem: how do you objectively measure a voip
channel's voice
quality?
Solution: play the telephone game.
1) system A tells system B a random word
2) system B records what it heard and tells it back to
system B
3) system A records what it heard and tells it back to
system A
4)
loop 2) until a pre-determined max iterations
5) let human being listen to each iteration (from worst
to best)
6) once a human can accurately make out what was said
stop
The iteration number is the TGQM.
TGQM=0 horrible unusable
TGQM=1 barely usable
TGQM=1000 as crystal clear as it gets
(optional) instead of relying on human in the loop, a
computer
voice
recognition module can do this. HTGQM (human TGQM)
/ ATGQM
(artificial TGQM)